A lot of assumptions on your part.
Actually Jon is not assuming anything but in fact is speaking from many year of experience in this business
To put that in perspective - Jon is not just some hobby guy that handles a few pounds to a few hundred pounds of boards but in fact he handles boards by the simi truck load (a simi load = 40 tons) & I am not talking about just run of the mill modern consumer boards but he in fact gets in VERY HIGH grade boards from OLD military, telecom, medical, aerospace
A few years ago (the year before Covid) I along with five other of this forums members from around the world (some of our very best) got together at Jon's over in England for a week
While I was there I took a FEW (VERY FEW) pictures of "some" of the kind of material Jon takes in so I am posting "a few" of those pics to put it in perspective for you
As well - I spent 10 year making a living dealing in circuit boards & though I did not handle near the volume of boards Jon does I was handling anywhere from 2 - 5 tons of boards per month - so I to have seen my fair share of the HIGH grade & VERY HIGH grade stuff like you have &/or like that in the pics I am providing here
And for what it is worth - what you have is considered HIGH grade (not just high grade) - the pics I am providing here are considered VERY HIGH grade
There is no question about it - you have score a VERY NICE stash of some VERY NICE stuff - BUT ----------
My estimation of value is based off of 2 months of sales and tracking other sales on eBay.
Basing you "estimation" off of E-bay sales of circuit boards is a VERY bad way for determining precious metal content of CBs
There are a LOT of people out there that have "gold fever" (thanks to youtube) that think circuit boards are just absolutely LOADED with precious metal so they will buy these "small" lots of circuit boards of E-bay for WAY MORE then the value of the PMs in them - thinking they are going to get rich processing the small batch of boards - which they just paid more for then the value of PMs they will get out of them --- again thanks to the fact that they watched some youtube videos that gave them gold fever causing them to buy CBs on E-bay for more then the value of the PMs in them
Just hoping to find a little Clarity in that regard
So - being at least somewhat new to this you have come here asking for some clarity of what you have - & that is a good thing - & though MANY of our members are small "hobby" refiners - "some" of us (like Jon & myself - & a "few" others) have spent "years" doing this as a business & making a living doing it
In other words - you came asking for advice - & some of us are in fact trying to give you that advice - & we are providing you with that advice - based on our years of experience - doing this for a living
am I insane for thinking that there’s anywhere close to 1lb of gold in this lot.
So yes - based on my ten years of doing this for a living (I am now retired from it) as I posted in my first post in this thread - at best - you will be lucky - to get half of that (in other words - likely less then half a pound) & that is IF (the VERY BIG IF) you get FULL recovery of ALL the values in your CBs
& trust me - there is no way you can do that your self as you are currently not properly set up to squeeze ALL of the values out of what you have --- it will cost you MORE then the values that are in the boards to do so
To do this (800 pounds) yourself) you will NEED to -------------
1) set up a "real" lab with fume hood & fume scrubber to deal with the TOXIC fumes
2) source all the different chemical you will be needing for all the "different" processes used in recovery
3) source the lab ware & equipment needed for those "different" process
4) Learn all chemistry for the for the different process to recover the different metals (this will take a HUGE amount of time in research)
5) set up a system for dealing with all the TOXIC waste created in the recovery of the PMs in order to make it safe for disposal
& that is just on the side of the things that can be recovered chemically
Then there is the stuff that can't just be chemically processed - MUCH of it NEEDs to go through a shredding, incineration, milling, smelting process (like shown in the video I provided a link to)
My point being - you have no choice but to pass this off to someone that is actually in the business off doing this
& again - yes - your "estimate" that you have a pound of gold is WAY off - half that - IF you are lucky